package com.zjj.lbw.jdk.v8.map;

import java.util.ArrayList;
import java.util.HashMap;

/**
 * @author zhanglei.zjj
 * @description HashMap基本演示
 * @date 2023/8/19 11:41
 */
public class HashMapTest {
    public static void main(String[] args) {
        HashMap<String, String> hashMap = new HashMap<>();
        hashMap.put("123", "2");
        hashMap.get("123");

        ArrayList<Object> list = new ArrayList<>();
        list.add(new Object());
        list.add(new Object());
    }

    
}
